Abstract
Epidemics of spotted wilt, caused by tomato spotted wilt tospovirus, were monitored in plantings of groundnut cultivars Georgia Browne, Southern Runner and Florunner in 5 tests during 1990-93 at Attapulgus, Georgia, USA, and in plantings of the 3 cultivars plus Marc I and AT-127 in 3 tests in Colquitt County, Georgia, in 1993. Final incidence of spotted wilt and area under the disease progress curve values for Georgia Browne were similar to those for Southern Runner but lower than those for Florunner, Marc I and At-127. Pod yields for Georgia Browne were higher than those for Florunner in all tests at both locations and higher than those for the 4 other cultivars in Colquitt County in 1993. Pod yields were similar for Georgia Browne and Southern Runner in 5 tests in Attapulgus. Numbers of tobacco thrips (Frankliniella fusca), western flower thrips (F. occidentalis) or larvae of undifferentiated Frankliniella spp. that colonized the cultivars were similar in most cases. Differences among the cultivars in incidence of spotted wilt could not be attributed to differences in thrips population.
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